DC + - 45V L28 amplifier board pure latter stage ( 350W Mono AMP ) | Электроника

DC + - 45V L28 amplifier board pure latter stage ( 350W Mono AMP ) | Электроника

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DIY amplifier board details

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L28 300W mono amplifier board

Introduction :

Circuit board using 1.6MM thick PCB,

Each mono channel four pairs of high-power tube .

Support 350W 4 Ohms output power.

So far, the best control amplifier stage .

L-28 is a product of pure L20 upgrade post-amplifier .

L-28 has excellent control, low distortion , wide range of voltage support . High-power high-current output load.

Bassoon four pairs per channel output , the maximum load current 40A.

Voltage support a wide range , can be arbitrarily install two pairs per channel , four pairs of high-power tube .

Performance parameters :

Power 200W (8R) 350W (4R)

Voltage : DC + - 45V

Rectified AC voltage range AC before AC dual dual- 18V to 34V

THD = 0.009% 1K HZ 50W 8R

SR = 35V / US

Noise 92DBU

EIN = 114 DB

Frequency Response 20-20KHZ + - 0.5 DB

Voltage gain 34 times

All resistors are 1% precision resistors with precision , including high-precision output power resistors are used .

PCB size : 136MM * 72 MM

All capacitors are imported . Imported original Toshiba 1943/ 5200 audio power tubes .

Toshiba A1930 C5171 push pipe imported audio original transistor

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Photos List

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Shipping services:

Shipping:

I will send your item in 4 days after your payment

All will be shipped by international standard airmail,Sometimes may delay one more week,
as for your Country Customhouse.
United Kingdom | United States | Australia | Canada |(About 15-35 Days)
Germany | Austria | Switzerland |(About 15-35 Days)
France | Italy | (About 25-60 Days)
Other | (About 30-90 Days)
 If you choose the following shipping methods,the shipping fee will be charged.
EMS,shipping date:5 to 13 days
DHL,shipping date:2 to 8 days
FEDEX,shipping date:2 to 8 days
TNT,shipping date:2 to 8 days
 

 Return policy:

If you are not satisfied with our quality,Pls send back to us,we will return your money except shipping cost.
But we don`t accept the return by the color differentia.Because different monitor have different display.And every time,
maybe the same color No. will have a little color differentia.
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please leave us a positive feedback and rate the details of the transaction.
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Please email us before leaving negative feedback or open any dispute.
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Please give us the opportunity to solve any problem.
 

 Notice:

 If there is customs expenses,you need to pay the taxes to the courier on receipt of the items.